North American prairie / J. E. Weaver. Weaver, John E. (John Ernest), 1884-1966. Prairies. Botany North America. QK938.P7 W4 581.52645 WEN Includes bibliographical references and index. Lincoln, Nebraska : Johnsen Publishing, c1954. c1954. 1954 Text xi, 348 p. : eng North America.